ATE46923T1 - WATER-COOLED BLOWING LANCE FOR BLOWING OXYGEN ON A METAL METAL. - Google Patents

WATER-COOLED BLOWING LANCE FOR BLOWING OXYGEN ON A METAL METAL.

Info

Publication number
ATE46923T1
ATE46923T1 AT86101134T AT86101134T ATE46923T1 AT E46923 T1 ATE46923 T1 AT E46923T1 AT 86101134 T AT86101134 T AT 86101134T AT 86101134 T AT86101134 T AT 86101134T AT E46923 T1 ATE46923 T1 AT E46923T1
Authority
AT
Austria
Prior art keywords
oxygen
lance
metal
blowing
melt
Prior art date
Application number
AT86101134T
Other languages
German (de)
Inventor
Ernst Dipl-Ing Fritz
Original Assignee
Kloeckner Cra Tech
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kloeckner Cra Tech filed Critical Kloeckner Cra Tech
Application granted granted Critical
Publication of ATE46923T1 publication Critical patent/ATE46923T1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/305—Afterburning

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

A water-cooled lance for blowing oxygen or oxygen containing gas onto a metal melt, for example an iron melt, for afterburning reaction gases from the melt and transfering the heat of afterburning back to the melt comprises a center tube forming a gas supply duct surrounded by further tubes for cooling water. The center tube leads to a head having a plurality of oxygen-blowing nozzles. Each of the nozzles has a plurality of oxygen outlet openings. The outlet openings have their centers lying on two concentric circles and are arranged so that each opening produces an individual gas stream. The axes of the outlet openings are inclined to the longitudinal axis of the lance at angles such that, in a plane perpendicular to the longitudinal axis of the lance and at a distance Lh from the head, the gas streams extend over an annular area in the plane having an inside diameter Di and and outside diameter Da. Lh, Di and Da have the following relationships: Di:Lh is the range of from 0.15 to 0.6; and, Da:Lh is the range of from 0.6 to 1.2.
AT86101134T 1985-03-19 1986-01-29 WATER-COOLED BLOWING LANCE FOR BLOWING OXYGEN ON A METAL METAL. ATE46923T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3509795A DE3509795C1 (en) 1985-03-19 1985-03-19 Water-cooled blowing lance for blowing oxygen onto a molten metal
EP86101134A EP0195897B1 (en) 1985-03-19 1986-01-29 Water-cooled lance for blowing oxygen onto a metal bath

Publications (1)

Publication Number Publication Date
ATE46923T1 true ATE46923T1 (en) 1989-10-15

Family

ID=6265624

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86101134T ATE46923T1 (en) 1985-03-19 1986-01-29 WATER-COOLED BLOWING LANCE FOR BLOWING OXYGEN ON A METAL METAL.

Country Status (6)

Country Link
US (1) US4702462A (en)
EP (1) EP0195897B1 (en)
JP (1) JPS61213312A (en)
AT (1) ATE46923T1 (en)
AU (1) AU571125B2 (en)
DE (2) DE3509795C1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU86321A1 (en) * 1986-02-25 1987-09-10 Arbed OXYGEN BLOWING LANCE
JPH0595905U (en) * 1992-06-03 1993-12-27 富士車輌株式会社 Garbage input device
RU2051974C1 (en) * 1995-01-25 1996-01-10 Александр Леонидович Кузьмин Oxygen converter-type tuyere tip
DE19529932C1 (en) * 1995-08-02 1997-01-16 Mannesmann Ag Lance head of a blow lance for the treatment of melts
US6125133A (en) * 1997-03-18 2000-09-26 Praxair, Inc. Lance/burner for molten metal furnace
US6217824B1 (en) 1999-05-20 2001-04-17 Berry Metal Company Combined forged and cast lance tip assembly
GB9922543D0 (en) * 1999-09-24 1999-11-24 Rhs Paneltech Ltd Wire feed unit
BE1013686A3 (en) * 2000-09-15 2002-06-04 Thomas Jacques Blowing nose spear.
FR2860243B1 (en) * 2003-09-30 2006-02-03 Air Liquide MULTI-JETS NOZZLE AND MULTI-JET LANCE COMPRISING IT
US7799735B2 (en) * 2005-06-01 2010-09-21 Ronald Segall Chemically modified melamine resin for use in sublimation dye imaging
WO2007123986A2 (en) * 2006-04-21 2007-11-01 Berry Metal Company Metal making lance tip assembly
US7568681B2 (en) * 2006-12-15 2009-08-04 Technology Resources Pty. Limited Apparatus for injecting gas into a vessel
CN101526309B (en) * 2008-03-03 2011-04-20 云南云维股份有限公司 Closed type calcium carbide furnace charging nozzle and process for producing same
DE102010047969A1 (en) * 2010-03-31 2011-10-06 Sms Siemag Aktiengesellschaft Device for injecting gas into a metallurgical vessel
US9016094B2 (en) * 2013-01-16 2015-04-28 Guardian Industries Corp. Water cooled oxygen lance for use in a float glass furnace and/or float glass furnace using the same
JP6292019B2 (en) * 2014-05-14 2018-03-14 新日鐵住金株式会社 Top blowing lance for molten metal refining

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU472980A1 (en) * 1973-08-03 1975-06-05 Уральский политехнический институт им.С.М.Кирова GAS-OXYGEN FURMA3 P T B ^ • ^ - ^: ":" "- - W'SH1 The invention relates to the field of metallurgy, in particular, can be used in steelmaking. A known gas-oxygen lance for blowing melts with preliminary mixing of gases ( fuel and oxygen), which consists of coaxially arranged pipes and a head with nozzles with a central supply of cooling water. However, this lance is not equipped with a device that prevents flame from leaking from the nozzles to the mixing unit. Combustion of a mixture of gas and oxygen inside the annular supply path leads to cut In the proposed gas-oxygen tuyere, in order to prevent flame penetration from the purge nozzles into the fuel-oxygen path, the latter in the lower part is divided by an annular water-cooled partition with openings (an annular partition is manufactured metal, for example copper), an annular gas manifold is placed under the partition, which communicates with the purge nozzles. FIG. 1 shows the gas-oxygen |) urma in section; in fig. 2 is the same; the section along A — A in FIG. 1. The described lance consists of three coaxial alipulations of the pipes, through which, like in an ordinary oxygen lance, the head I is fed, and water is drained from it, and purging gas is fed into it. The lance has a central-axial supply of water 2 to the head I 5 for cooling, channels 3 for draining water from the cetiral cavity of the head into the inter-pipe cavity 4 of the lance. Channels 3 are evenly distributed between the nozzles 5. In the tail part of the tuyere, as in the known tuyeres, there are 10 nozzles b and 7, respectively, for iodachi in the tuyere and removal of water for cooling from it, as well as the nozzles 8 and 9, respectively, for introducing oxygen into the tuyere and fuel (gas). In addition, in the tail part of the tuyere, at the 15th level of the tubing 9, there is a mixing ring 10, which overlaps the annular gap formed by the central (axial) pipe 11 and the separation pipe 12. The mixing ring 10 is sealed 20 (for example, by welding), welded or with one of these pipes or with both. In the first case, the circumferential docking with the pipe has a seal 13. The mixing ring 10 contains a series of vertical holes — mixing nozzles 14, through which from the upper part 15 of the annular gap, blocked by ring 10, oxygen passes into the fuel-oxygen path 16. The mixing nozzles 14 in the lower part are articulated with openings 17, which serve to supply gaseous
LU78906A1 (en) * 1978-01-19 1979-09-06 Arbed METHOD AND DEVICE FOR REFINING A METAL BATH
US4190238A (en) * 1978-05-11 1980-02-26 Stahlwerke Peine-Salzgitter Ag Lance head for a fining lance
SU821842A1 (en) * 1979-06-27 1981-04-15 Институт Газа Ан Украинской Сср Gas-oxygen burner
LU82846A1 (en) * 1980-10-13 1982-05-10 Arbed OXYGEN BLOWING LANCE
FR2496699B1 (en) * 1980-12-22 1985-06-21 Siderurgie Fse Inst Rech BLOWING NOZZLE FOR OXIDIZING GAS, ESPECIALLY OXYGEN, FOR THE TREATMENT OF FUSED METALS
LU83814A1 (en) * 1981-12-04 1983-09-01 Arbed METHOD AND DEVICE FOR REFINING A METAL BATH CONTAINING SOLID COOLING MATERIALS
FR2521167B1 (en) * 1982-02-10 1987-04-30 Siderurgie Fse Inst Rech GAS INJECTION LANCE FOR METALLURGICAL CONVERTER

Also Published As

Publication number Publication date
AU5385686A (en) 1986-09-25
DE3666050D1 (en) 1989-11-09
EP0195897A3 (en) 1987-05-27
JPS6311405B2 (en) 1988-03-14
AU571125B2 (en) 1988-03-31
US4702462A (en) 1987-10-27
EP0195897B1 (en) 1989-10-04
EP0195897A2 (en) 1986-10-01
JPS61213312A (en) 1986-09-22
DE3509795C1 (en) 1986-06-05

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Legal Events

Date Code Title Description
EEIH Change in the person of patent owner
REN Ceased due to non-payment of the annual fee